The storage servers in the grid use an RDMA Network Fabric network (Infiniband) to connect to the database servers that have a single-instance database or Oracle Real Application Clusters (Oracle RAC) database installation.
*Each storage server contains multiple physical disks.
*Each cell disk represents a physical disk and a LUN.
*Each cell disk is partitioned into grid disks.
*Oracle ASM disk groups are created using the grid disks.
Oracle ASM failure groups are created to ensure that files are not mirrored on the same storage server, enabling the system to tolerate the failure of a storage server. The number of failure groups equals the number of storage servers. Each failure group is composed of a subset of grid disks in the Oracle ASM disk group that belong to a single storage server.
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